@startuml
usecase UC1 as "You can use
several lines to define your usecase.
You can also use separators.
--
Several separators are possible.
==
And you can add titles:
..Conclusion..
This allows large description."
@enduml
Use package
You can use packages to group actors or use cases.
@startuml
left to right direction
actor Guest as g
package Professional {
actor Chef as c
actor "Food Critic" as fc
}
package Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
usecase "Review" as UC4
}
fc --> UC4
g --> UC1
g --> UC2
g --> UC3
@enduml
You can use rectangle to change the display of the package.
@startuml
left to right direction
actor "Food Critic" as fc
rectangle Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
}
fc --> UC1
fc --> UC2
fc --> UC3
@enduml
@startuml
User -> (Start)
User --> (Use the application) : A small label
:Main Admin: ---> (Use the application) : This is\nyet another\nlabel
@enduml
继承
如果一个角色或者用例继承于另一个，那么可以用<|--符号表示。
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User <|-- Admin
(Start) <|-- (Use)
@enduml
使用注释
可以用note left of , note right of , note top of , note bottom of等关键字给一个对象添加注释。 注释还可以通过note关键字来定义，然后用..连接其他对象。
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User -> (Start)
User --> (Use)
Admin ---> (Use)
note right of Admin : This is an example.
note right of (Use)
A note can also
be on several lines
end note
note "This note is connected\nto several objects." as N2
(Start) .. N2
N2 .. (Use)
@enduml
构造类型
用 << 和 >> 来定义角色或者用例的构造类型。
@startuml
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
改变箭头方向
默认连接是竖直方向的，用--表示，可以用一个横杠或点来表示水平连接。
@startuml
:user: --> (Use case 1)
:user: -> (Use case 2)
@enduml
也可以通过翻转箭头来改变方向。
@startuml
(Use case 1) <.. :user:
(Use case 2) <- :user:
@enduml
@startuml
skinparam handwritten true
skinparam usecase {
BackgroundColor DarkSeaGreen
BorderColor DarkSlateGray
BackgroundColor<< Main >> YellowGreen
BorderColor<< Main >> YellowGreen
ArrowColor Olive
ActorBorderColor black
ActorFontName Courier
ActorBackgroundColor<< Human >> Gold
}
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
一个完整的例子
@startuml
left to right direction
skinparam packageStyle rectangle
actor customer
actor clerk
rectangle checkout {
customer -- (checkout)
(checkout) .> (payment) : include
(help) .> (checkout) : extends
(checkout) -- clerk
}
@enduml
Business Use Case
You can add / to make Business Use Case.
Business Usecase
@startuml
(First usecase)/
(Another usecase)/ as (UC2)
usecase/ UC3
usecase/ (Last\nusecase) as UC4
@enduml
Business Actor
@startuml
:First Actor:/
:Another\nactor:/ as Man2
actor/ Woman3
actor/ :Last actor: as Person1
@enduml
@startuml
actor a
actor b #pink;line:red;line.bold;text:red
usecase c #palegreen;line:green;line.dashed;text:green
usecase d #aliceblue;line:blue;line.dotted;text:blue
@enduml
Hitchhiker's Guide
